Outdoor binoculars area of use watersports travel nature outdoor sports magnification 10 x lens diameter 50 mm prism system roof exit pupil diameter 5 mm min focus distance 25 m angle of view 58 field of view in 1000 m 101 m twilight factor 224 relative brightness 25 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating fully multi coated weight 780 g special features for spectacle wearers outd